@article{ZVMMF_2014_54_3_a1,
     author = {A. M. Vetoshkin},
     title = {Jordan form of the difference of projectors},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {375--390},
     year = {2014},
     volume = {54},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2014_54_3_a1/}
}